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Network device managing apparatus and method

a network device and management apparatus technology, applied in the field of network device management apparatus and method, can solve the problems of large-scale complex lans and a large group of interconnected lans that require “management, increase the traffic of the network, and variable-length identifiers that are difficult to handle in installing network management software, so as to achieve the effect of not increasing the load of the network

Inactive Publication Date: 2005-12-27
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0081]The present invention has been made in consideration of the above prior art, and has as its object to provide a network device managing apparatus and method capable of acquiring information of a network device without increasing the load of a network.

Problems solved by technology

On the other hand, a large-scale complicated LAN and a large group of interconnected LANs require “management”.
The object identifier is a variable-length identifier which is difficult to handle in installing the network management software.
This significantly increases the traffic of the network.
A situation like this is unpreferable from network load and management viewpoints.

Method used

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  • Network device managing apparatus and method
  • Network device managing apparatus and method
  • Network device managing apparatus and method

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first embodiment

[0104]As described in the explanation of the prior art, the SNMP definitions have a command called a trap. This trap includes several types, and one of them is called a cold start trap which is broadcast to a network when a device is activated. In the present invention, addition of a new device to the network is detected by capturing this cold start trap.

[0105]The present invention will be described in detail below with reference to the accompanying drawings.

[0106]FIG. 11 is a view showing the arrangement of various devices on a network.

[0107]A computer 1101 executes a network device management program. A directory service is operating in a directory server 1102. A trap monitoring program executing machine 1103 monitors a trap packet. This trap monitoring program executing machine will also be simply referred to as a trap monitor hereinafter. The configurations of these computers 1101, 1102, and 1103 can be identical with that shown in FIG. 5 in the explanation of the prior art. How...

second embodiment

[0118]A trap packet is a common packet in device management by the SNMP. Therefore, it is convenient if a trap monitor 1103 registers a captured trap packet in directory service after verifying that the packet is from a device type to be searched for, since a client accesses the directory service later. That is, if the client intends to control only a network printer, it is more desirable that a trap packet be registered in the directory service after it is verified that the device which has transmitted this packet is a printer.

[0119]Furthermore, when the trap monitor 1103 receives a trap packet, more detailed information about a device can be obtained by using a packet for inquiring the status of the device as a packet for checking for the device type.

[0120]The object of the second embodiment of the present invention is to improve these respects.

[0121]In this second embodiment, it is assumed that a network device to be controlled is a network printer.

[0122]FIG. 15 is a flow chart f...

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Abstract

Each network device connected to a network broadcasts a cold start trap when activated. A monitoring device captures this trap and checks whether the trap is an SNMP packet. If the trap is an SNMP packet, the monitoring device extracts the address from the received packet and registers the address in a directory server, or requests the status of a device as a transmission source and registers the received status in the directory server.

Description

FIELD OF THE INVENTION[0001]The present invention relates to a network device managing apparatus and method of managing devices connected to, e.g., a computer network.BACKGROUND OF THE INVENTION[0002]Recently, a local area network (LAN) interconnecting computers is widely used. This local area network can be constructed on a floor of a building, in a whole building, across buildings (precincts), in a local region, or over a large area. Such networks can be further interconnected and connected to a worldwide network. These interconnected LANs sometimes have diverse hardware interconnecting technologies and several network protocols.[0003]Each individual user can manage a separated simple LAN. That is, the user can change devices, install software, and diagnose problems.[0004]On the other hand, a large-scale complicated LAN and a large group of interconnected LANs require “management”. Commonly, “management” means management by both a human network manager and software used by the man...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): G06F13/00G06F13/14H04L12/24
CPCH04L41/0213
Inventor HAMADA, NOBORU
Owner CANON KK
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